Sleeve type three-electrode flowing electrolytic tank

Abstract

The utility model discloses a sleeve type three-electrode flowing electrolytic tank which comprises a miniature tee joint, a reference electrode is arranged at the top end of the miniature tee joint, and a first PEEK sleeve is arranged on one side of the miniature tee joint. When in use, a micro-volume sleeve structure consisting of the first PEEK sleeve, the second PEEK sleeve, the PEEK connector, the micro tee joint and the three electrodes with the threads is adopted, and the connection mode of the thread structure also enhances the pressure bearing capacity of the whole electrolytic tank, so that the electrolytic tank is more suitable for a flowing system with pressure, and meanwhile, the electrolytic tank is smaller in volume and more convenient to use. According to the electrochemical reaction device, the concentration change of raw materials and products in the electrochemical reaction process can be sensitively reflected, the interpolated working electrode, counter electrode and reference electrode can be detached and taken out conveniently, cleaning, maintenance and repeated use are facilitated, the service life of consumables can be prolonged, and the detection repeatability can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a sleeve-type three-electrode flow electrolytic cell. Background Art

[0002] Electrochemistry involves the transfer and transmission of electrons and has a very wide range of applications, including electrolysis industry, electroplating, environmental protection, metal corrosion prevention, chemical energy, electrochemistry analysis, bioelectrochemistry and many other fields. By means of electrochemical technical means, combined with various spectroscopic techniques, it can realize real-time monitoring of the electrode surface reaction kinetic process, exploration of the molecular electrochemical oxidation mechanism, on-line analysis of electrochemistry reaction products and other applications. Conventional electrolytic cells are mostly static, that is, the electrolyte remains stationary, and the volume of the electrolytic cell is large. Of course, there are also some flow electrolytic cells for electrochemistry spectroscopy testing on the market at present, and most of them are designed as detachable multiple modules;

[0003] However, in the actual use process of the existing electrolytic cells, there are still technical problems that it is difficult to reflect the concentration changes of raw materials and products in the electrochemistry reaction process, resulting in low detection sensitivity, limited system pressure that can be tolerated, the risk of liquid leakage when the electrolyte flow rate is too large, and low reuse rate. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a sleeve-type three-electrode flow electrolytic cell, which can solve the technical problems that it is difficult to reflect the concentration changes of raw materials and products in the electrochemistry reaction process, resulting in low detection sensitivity, limited system pressure that can be tolerated, the risk of liquid leakage when the electrolyte flow rate is too large, and low reuse rate.

[0005] To solve the above technical problems, the utility model provides the following technical solution: a sleeve-type three-electrode flow electrolytic cell, including a micro three-way joint, a reference electrode is arranged at the top of the micro three-way joint, a first PEEK sleeve is arranged on one side of the micro three-way joint, a second PEEK sleeve is arranged on the other side of the micro three-way joint, a working electrode is arranged inside the first PEEK sleeve, a counter electrode is arranged inside the second PEEK sleeve, a PEEK joint is arranged on one side of the first PEEK sleeve and the second PEEK sleeve, a stainless steel sealing joint is arranged on one side of the working electrode and one side of the counter electrode, a connector is arranged at the bottom of the reference electrode, an external thread is arranged outside the connector, a first sealing gasket is arranged outside the bottom connector of the reference electrode, and a second sealing gasket is arranged on one side of the PEEK joint.

[0006] As a preferred technical solution of the utility model, the micro three-way joint is in a "T" shape, and internal threads are arranged on both sides and the top inside the micro three-way joint.

[0007] As a preferred technical solution of the present utility model, the inner diameters of the first PEEK sleeve and the second PEEK sleeve are 1.2 mm, and the lengths are 10 cm. An external thread is provided on the outer side of the PEEK joint, and the PEEK joint can be hermetically connected to the micro three-way through the thread.

[0008] As a preferred technical solution of the present utility model, the diameter of the working electrode is 0.6 - 0.8 mm. An external thread is provided on the outer side of the stainless steel sealing joint, and the working electrode can be hermetically connected to the electrolyte flow path system through the stainless steel joint.

[0009] As a preferred technical solution of the present utility model, the diameter of the counter electrode is 0.6 - 0.8 mm, and the counter electrode can be hermetically connected to the electrolyte flow path system through the stainless steel sealing joint.

[0010] As a preferred technical solution of the present utility model, the first sealing gasket and the second sealing gasket are annular.

[0011] As a preferred technical solution of the present utility model, the reference electrode, the working electrode, and the counter electrode are connected to an electrochemical workstation through electrical lines, and the stainless steel sealing joint is connected to a high-performance liquid chromatograph and a high-resolution mass detector through an electrolyte circulation pipeline.

[0012] Compared with the prior art, the beneficial effects that the present utility model can achieve are:

[0013] 1. By providing a micro three-way, a first PEEK sleeve, a second PEEK sleeve, a PEEK joint, a stainless steel sealing joint, and a connector, when in use, a micro-volume sleeve structure composed of the first PEEK sleeve, the second PEEK sleeve, the PEEK joint, the micro three-way, and the three electrodes with threads is adopted, and the connection method of the thread structure also enhances the pressure-bearing capacity of the entire electrolytic cell, making it more suitable for a pressurized flow system. At the same time, the volume of the electrolytic cell is smaller, which can sensitively reflect the concentration changes of raw materials and products during the electrochemical reaction process, and it is also convenient to disassemble and remove the in-serted working electrode, counter electrode, and reference electrode for cleaning, maintenance, and repeated use, improving the service life of the consumables and the repeatability of detection.

[0014] 2. By providing a first sealing gasket and a second sealing gasket, when connecting the reference electrode, the first PEEK sleeve, the second PEEK sleeve, and the micro three-way through the connector and the PEEK joint, the first sealing gasket and the second sealing gasket are used to further seal the connection part to avoid electrolyte leakage caused by loose thread connection and affect the normal operation of the electrolytic cell, thereby effectively improving the sealing performance of the sleeve-type electrolytic cell and having strong feasibility. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a front view partial sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is an exploded view of the present utility model;

[0018] Figure 4 is of the present utility model Figure 3 magnified structural schematic diagram at position A;

[0019] Figure 5 is a working schematic diagram of the electrolytic cell of the present utility model.

[0020] Wherein: 1, stainless steel seal joint; 2, first PEEK sleeve; 3, PEEK joint; 4, reference electrode; 5, micro three-way; 6, second PEEK sleeve; 7, working electrode; 8, counter electrode; 9, first gasket; 10, connector; 11, second gasket; 12, high performance liquid chromatograph; 13, electrochemical workstation; 14, high resolution mass detector. Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the following specific embodiments are used to further elaborate the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present utility model. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified.

[0022] Embodiment

[0023] Such as Figures 1 - 5As shown in the figure, the utility model discloses a sleeve-type three-electrode flow electrolytic cell, which includes a micro three-way joint 5 in a "T" shape. Internal threads are provided on both sides and the top inside the micro three-way joint 5. A reference electrode 4 is arranged at the top of the micro three-way joint 5. A first PEEK sleeve 2 is arranged on one side of the micro three-way joint 5, and a second PEEK sleeve 6 is arranged on the other side of the micro three-way joint 5. The inner diameters of the first PEEK sleeve 2 and the second PEEK sleeve 6 are 1.2 mm, and the lengths are 10 cm. A working electrode 7 is arranged inside the first PEEK sleeve 2, and the diameter of the working electrode 7 is 0.6 - 0.8 mm. A counter electrode 8 is arranged inside the second PEEK sleeve 6, and the diameter of the counter electrode 8 is 0.6 - 0.8 mm. A PEEK joint 3 is arranged on one side of the first PEEK sleeve 2 and the second PEEK sleeve 6. External threads are provided on the outer side of the PEEK joint 3, and the PEEK joint 3 can be hermetically connected to the micro three-way joint 5 through threads. A stainless-steel sealing joint 1 is arranged on one side of the working electrode 7 and one side of the counter electrode 8. External threads are provided on the outer side of the stainless-steel sealing joint 1. The working electrode 7 can be hermetically connected to the electrolyte flow path system through the stainless-steel joint, and the counter electrode 8 can be hermetically connected to the electrolyte flow path system through the stainless-steel sealing joint 1. The reference electrode 4, the working electrode 7, and the counter electrode 8 are connected to an electrochemical workstation 13 through electrical circuits. The stainless-steel sealing joint 1 is connected to a high-performance liquid chromatograph 12 and a high-resolution mass detector 14 through an electrolyte circulation pipeline. A connector 10 is arranged at the bottom of the reference electrode 4. External threads are provided on the outside of the connector 10, and the connector 10 is fixedly connected to the top inside the micro three-way joint 5 through threaded connection. The connection method of the threaded structure also enhances the pressure-bearing capacity of the entire electrolytic cell, making it more suitable for a pressurized flow system. Moreover, the volume of the electrolytic cell is smaller, which can sensitively reflect the concentration changes of raw materials and products during the electrochemical reaction process. At the same time, it is also convenient to disassemble and remove the inserted working electrode 7, counter electrode 8, and reference electrode 4 for cleaning, maintenance, and repeated use, improving the service life of the consumables and the repeatability of detection. A first sealing gasket 9 in a ring shape is arranged on the outside of the connector 10 at the bottom of the reference electrode 4, and a second sealing gasket 11 in a ring shape is arranged on one side of the PEEK joint 3. The first sealing gasket 9 and the second sealing gasket 11 are used to further seal the connection points, avoiding loosening of the threaded connection and causing electrolyte leakage to affect the normal operation of the electrolytic cell, thereby effectively improving the sealing performance of the sleeve-type electrolytic cell;

[0024] During use, the micro-volume sleeve structure composed of the first PEEK sleeve 2, the second PEEK sleeve 6, the PEEK joint 3, the micro three-way joint 5, and the threaded three electrodes enhances the pressure-bearing capacity of the entire electrolytic cell. At the same time, the volume of the electrolytic cell is smaller, which can sensitively reflect the concentration changes of raw materials and products during the electrochemical reaction process. Moreover, it is also convenient to disassemble and remove the inserted working electrode 7, counter electrode 8, and reference electrode 4 for cleaning, maintenance, and repeated use;

[0025] Specific working principle:

[0026] When using the sleeve-type three-electrode flow electrolytic cell, first connect the connector 10, PEEK joint 3 and the micro three-way 5 through threaded connection, so as to connect the reference electrode 4, the first PEEK sleeve 2 and the second PEEK sleeve 6 with the micro three-way 5. At the same time, use the first gasket 9 and the second gasket 11 to further seal the connection points to prevent the loosening of the threaded connection from causing electrolyte leakage and affecting the normal operation of the electrolytic cell. And connect the working electrode 7 and the counter electrode 8 with the electrolyte flow path system through the stainless steel sealing joint 1. Subsequently, connect the reference electrode 4, the working electrode 7 and the counter electrode 8 with the electrochemical workstation 13 through electrical lines, and connect the high-performance liquid chromatograph 12 and the high-resolution mass detector 14 with the stainless steel sealing joint 1 respectively through the electrolyte circulation pipelines. The connection method of the threaded structure also enhances the pressure-bearing capacity of the entire electrolytic cell. When the electrolytic cell is working, the complex sample is first separated by the high-performance liquid chromatograph 12, and the purified products are successively passed through the sleeve-type three-electrode flow electrolytic cell and controlled by the online controllable electrochemical workstation 13. The electrolytic cell sensitively reflects the concentration changes of raw materials and products during the electrochemical reaction process, controls parameters such as the oxidation-reduction potential according to the nature of the detection object, and further introduces the electrolysis products into the high-resolution mass detector 14 for detection.

[0027] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeve-type three-electrode flow electrolytic cell, comprising a micro tee (5), characterized in that: A reference electrode (4) is arranged at the top of the micro tee (5), a first PEEK sleeve (2) is arranged on one side of the micro tee (5), a second PEEK sleeve (6) is arranged on the other side of the micro tee (5), a working electrode (7) is arranged inside the first PEEK sleeve (2), a counter electrode (8) is arranged inside the second PEEK sleeve (6), a PEEK joint (3) is arranged on one side of the first PEEK sleeve (2) and the second PEEK sleeve (6), a stainless steel sealing joint (1) is arranged on one side of the working electrode (7) and one side of the counter electrode (8), a connector (10) is arranged at the bottom end of the reference electrode (4), an external thread is arranged on the outside of the connector (10) at the bottom of the reference electrode (4), a first sealing gasket (9) is arranged on the outside of the connector (10) at the bottom of the reference electrode (4), and a second sealing gasket (11) is arranged on one side of the PEEK joint (3).

2. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The micro tee (5) is in a "T" shape, and internal threads are provided on both sides and the top of the micro tee (5).

3. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The inner diameter of the first PEEK sleeve (2) and the second PEEK sleeve (6) is 1.2 mm, and the length is 10 cm. The outer side of the PEEK connector (3) is provided with an external thread, and the PEEK connector (3) can be connected to the micro tee (5) through a threaded seal.

4. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The diameter of the working electrode (7) is 0.6-0.8 mm, and the outer side of the stainless steel sealing joint (1) is provided with an external thread. The working electrode (7) can be sealed and connected to the electrolyte flow path system through the stainless steel joint.

5. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The diameter of the counter electrode (8) is 0.6-0.8 mm, and the counter electrode (8) can be sealed and connected to the electrolyte flow path system through a stainless steel sealing joint (1).

6. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The first sealing gasket (9) and the second sealing gasket (11) are annular in shape.

7. The sleeve-type three-electrode flow electrolytic cell according to claim 1, characterized in that: The reference electrode (4), the working electrode (7) and the counter electrode (8) are connected to an electrochemical workstation (13) via electrical lines, and the stainless steel sealed joint (1) is connected to a high performance liquid chromatograph (12) and a high resolution mass spectrometer (14) via an electrolyte flow pipeline.

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